US2935765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tubular rubber latex articles by deposition on an interior mold surfce
Assignee: Pirelli and C SpA
•
Filing: 1955-10-24
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Granted: 1960-05-10
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Expires: 1975-10-24
Abstract
No abstract record available.
Inventors
- 👤 Ciampolini Valerio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:20
CPC Classifications
B; B29; B29D; B29D23/00; B29D23/24; B29K; B29K2021/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A METHOD FOR THE PRODUCTION OF A TUBULAR ARTICLE FROM LATEX WHICH INCLUDES THE STEPS OF INTRODUCING LATEX UNDER PRESSURE INTO THE INTERIOR OF A HOLLOW FORM, DISCHARGING UNDEPOSITED LATEX FROM SAID FORM, DRYING THE DEPOSITED LAYER OF LATEX, VULCANIZING THE DEPOSITED LAYER, DUSTING THE INTERIOR SURFACE OF THE RESULTING TUBULAR ARTICLE TO PREVENT THE INTERIOR WALL PORTIONS OF THE TUBULAR ARTICLE FROM ADHERING TOGETHER WHEN IN CONTACT, DUSTING THE OUTSIDE OF SAID TUBULAR ARTICLE BY RESILIENTLY EXTENDING IT FROM THE FORM IN ORDER TO MAKE ITS EXTERNAL SURFACE AVAILABLE FOR TREATMENT, AND REMOVING THE TUBULAR ARTICLE FROM THE FORM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-10 | 1963-11-09 | 1964-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-10 | 1967-11-09 | 1968-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-10 | 1971-11-09 | 1972-05-10 | $7700.00 | Window Closed / Lapsed |